WO2022213960A1 - Procédé et appareil de détection d'informations - Google Patents

Procédé et appareil de détection d'informations Download PDF

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Publication number
WO2022213960A1
WO2022213960A1 PCT/CN2022/085230 CN2022085230W WO2022213960A1 WO 2022213960 A1 WO2022213960 A1 WO 2022213960A1 CN 2022085230 W CN2022085230 W CN 2022085230W WO 2022213960 A1 WO2022213960 A1 WO 2022213960A1
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Prior art keywords
pdcch
candidate
candidate pdcch
search space
space set
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PCT/CN2022/085230
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English (en)
Chinese (zh)
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WO2022213960A9 (fr
Inventor
高飞
刘显达
焦淑蓉
纪刘榴
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华为技术有限公司
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Priority to EP22784026.1A priority Critical patent/EP4311339A1/fr
Publication of WO2022213960A1 publication Critical patent/WO2022213960A1/fr
Publication of WO2022213960A9 publication Critical patent/WO2022213960A9/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Definitions

  • the present application relates to the field of communications, and more particularly, to a method and apparatus for information detection.
  • the base station will configure the radio resource control (RRC) parameters or the media access control layer control element (media access control control element, MAC CE) explicitly configures an association relationship for the two search space sets (search space set, SS set) used to transmit the same PDCCH or PDCCH repeated transmission. If this association relationship is considered, consider retaining the PDCCH repeated transmission function as much as possible.
  • RRC radio resource control
  • MAC CE media access control control element
  • the present application provides a method and apparatus for information detection, which can improve the utilization rate of candidate PDCCH resources.
  • a method for information detection is provided, and the method can be executed by a terminal device or a chip or a chip system on the terminal side.
  • the method includes: according to a first rule, determining that the first number of times of the candidate physical downlink control channel PDCCH that needs to be monitored on the first search space set and the second search space set is greater than a first threshold, wherein the first search space The set is associated with the second search space set; according to a second rule, determine whether the second number of times of the candidate PDCCHs that need to be monitored on the first search space set is greater than the first threshold; or, determine at least Whether the third number of candidate PDCCHs that need to be monitored on a third search space set is greater than the first threshold.
  • the first search space set and the second search space set may not be discarded, or the first search space set and the second search space set may not be discarded.
  • the first search space set and the second search space set are discarded as a whole, or the first search space set, the second search space set and the remaining search space sets are not discarded, which can improve the utilization rate of the candidate PDCCH resources.
  • the second rule it is determined whether the second number of times of the candidate PDCCH that needs to be monitored on the first search space set is greater than the first threshold, Including: if the second number of times is less than the first threshold, determining, according to the second rule, whether the fourth number of candidate PDCCHs that need to be monitored on the second search space set is greater than the second threshold, wherein, The second threshold is equal to the first threshold minus the second number of times.
  • the method further includes: if the fourth number of times is less than the second threshold, determining that monitoring is required on the at least one third search space set Whether the fifth number of candidate PDCCHs is greater than a third threshold, where the third threshold is equal to the second threshold minus the fourth number.
  • the determining whether the third number of times of the candidate physical downlink control channel PDCCH that needs to be monitored on at least one third search space set is greater than the first threshold including : According to the first rule or the second rule, determine whether the third number of times of the candidate PDCCH that needs to be monitored on the at least one third search space set is greater than the first threshold.
  • the first threshold includes: if the third number of times is less than the first threshold, determining, according to the second rule, whether the sixth number of times of candidate PDCCHs that need to be monitored on the fourth search space set is greater than the fourth threshold, Wherein, the fourth threshold is equal to the first threshold minus the third number of times.
  • the index value of the third search space set is greater than the index value of the first search space set and/or the index value of the second search space set .
  • the first rule is a monitoring counting rule of PDCCH used for repeated transmission; the second rule is a monitoring counting rule of PDCCH used for independent transmission.
  • a method for information detection is provided, and the method can be executed by a terminal device or a chip or a chip system on the terminal side.
  • the method includes: determining that the time-frequency resources corresponding to the first candidate physical downlink control channel PDCCH overlap with the time-frequency resources corresponding to the second candidate PDCCH, and the first candidate PDCCH is used for first downlink control information (downlink control information, Repeated transmission of DCI), the second candidate PDCCH is used for repeated transmission of the second DCI; the first DCI is detected on the first candidate PDCCH, wherein the first search space to which the first candidate PDCCH belongs The index value of the set is smaller than the index value of the second search space set to which the second candidate PDCCH belongs.
  • the terminal equipment According to the index value of the first SS set to which the first candidate PDCCH belongs and the index value of the second SS set to which the second candidate PDCCH belongs (the index value of the first SS set is smaller than the index value of the second SS set, that is, the first The priority of the SS set is higher than the priority of the second SS set), and it is determined to detect the first DCI on the first candidate PDCCH, so that the PDCCH detected by the terminal device can be consistent with the PDCCH sent by the base station, thereby improving the reception of the PDCCH by the terminal device. Success rate.
  • the detecting the first DCI on the first candidate PDCCH includes: detecting the first DCI on the first candidate PDCCH and the third candidate PDCCH The first DCI, wherein a third search space set to which the third candidate PDCCH belongs is associated with the first search space set.
  • the method further includes: detecting the second DCI on a fourth candidate PDCCH, where the fourth search space set to which the fourth candidate PDCCH belongs is associated with the second set of search spaces.
  • the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships: the first candidate PDCCH and the second candidate PDCCH have The same scrambling sequence; the first candidate PDCCH and the second candidate PDCCH are associated with the same control resource set; the first candidate PDCCH and the second candidate PDCCH carry the same bit size of downlink control information.
  • a method for information detection is provided, and the method can be performed by a terminal device or a chip or a chip system on the terminal side.
  • the method includes: determining that the time-frequency resources corresponding to the first candidate physical downlink control channel PDCCH overlap with the time-frequency resources corresponding to the second candidate PDCCH, the time-frequency resources corresponding to the third candidate PDCCH and the time-frequency resources corresponding to the fourth candidate PDCCH Overlapping, the first candidate PDCCH and the third candidate PDCCH are used for repeated transmission of the first downlink control information DCI, and the second candidate PDCCH and the fourth candidate PDCCH are used for the second downlink control information DCI.
  • the terminal device when the terminal device determines that the time-frequency resource corresponding to the first candidate PDCCH used for the first DCI repeated transmission and the time-frequency resource corresponding to the second candidate PDCCH used for the second DCI repeated transmission overlap, When the time-frequency resources corresponding to the third candidate PDCCH for repeated DCI transmission overlap with the time-frequency resources corresponding to the fourth candidate PDCCH for the second DCI repeated transmission, the terminal device shall use the index of the second SS set to which the second candidate PDCCH belongs.
  • the index value of the second SS set to which the fourth candidate PDCCH belongs the index value of the first SS set to which the first candidate PDCCH belongs, and the index value of the first SS set to which the first candidate PDCCH belongs (the size of the first SS set
  • the index value and/or the index value of the third SS set is smaller than the index value of the second SS set and the index value of the fourth SS set)
  • the PDCCH detected by the terminal device is consistent with the PDCCH sent by the base station, thereby improving the success rate of the terminal device receiving the PDCCH.
  • the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships: the first candidate PDCCH and the second candidate PDCCH have The same scrambling sequence; the first candidate PDCCH and the second candidate PDCCH are associated with the same control resource set; the first candidate PDCCH and the second candidate PDCCH carry the same bit size of downlink control information.
  • a method for information detection is provided, and the method can be executed by a terminal device or a chip or a chip system on the terminal side.
  • the method includes: determining that the time-frequency resources corresponding to the first candidate physical downlink control channel PDCCH overlap with the time-frequency resources corresponding to the second candidate PDCCH, and the second candidate PDCCH belongs to the second search space set; according to the first rule, determining The number of candidate PDCCHs that need to be monitored on the first candidate PDCCH and the third candidate PDCCH.
  • the first search space set to which the first candidate PDCCH belongs is associated with the third search space set to which the third candidate PDCCH belongs.
  • the second search space set is used for PDCCH independent transmission, and the first rule is a monitoring counting rule of PDCCH used for repeated transmission.
  • the terminal device determines that the time-frequency resources corresponding to the first candidate PDCCH used for repeated transmission overlap with the time-frequency resources corresponding to the second candidate PDCCH used for independent transmission.
  • the terminal device determines that the time-frequency resources corresponding to the first candidate PDCCH for repeated transmission overlap.
  • the number of candidate PDCCHs that need to be monitored on the first candidate PDCCH and the third candidate PDCCH can prevent the terminal equipment from monitoring the candidate PDCCHs from being inconsistent with the counting result of the base station, thereby improving the reliability of PDCCH transmission.
  • the index value of the first set of search spaces is greater than the index value of the second set of search spaces.
  • the index value of the third set of search spaces is greater than the index value of the second set of search spaces.
  • the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships: the first candidate PDCCH and the second candidate PDCCH have The same scrambling sequence; the first candidate PDCCH and the second candidate PDCCH are associated with the same control resource set; the first candidate PDCCH and the second candidate PDCCH carry the same bit size of downlink control information.
  • a communication device comprising: a processing unit configured to: determine, according to a first rule, the first time of the candidate physical downlink control channel PDCCH that needs to be monitored on the first search space set and the second search space set The number is greater than the first threshold, wherein the first search space set is associated with the second search space set; according to the second rule, determine the second PDCCH candidate PDCCH that needs to be monitored on the first search space set whether the number of times is greater than the first threshold; or, determine whether the third number of times of candidate PDCCHs that need to be monitored on at least one third search space set is greater than the first threshold.
  • the processing unit is specifically configured to: if the second number of times is less than the first threshold, determine, according to the second rule Whether the fourth number of times of candidate PDCCHs to be monitored on the second search space set is greater than a second threshold, where the second threshold is equal to the first threshold minus the second number of times.
  • the processing unit is further configured to: if the fourth number of times is less than the second threshold, determine that the at least one third search space set is on the set Whether the fifth number of candidate PDCCHs to be monitored is greater than a third threshold, where the third threshold is equal to the second threshold minus the fourth number.
  • the processing unit is specifically configured to: determine, according to the first rule or the second rule, that the at least one third search space set needs to be Whether the third number of monitored candidate PDCCHs is greater than the first threshold.
  • the processing unit is further configured to: if the third number of times is less than the first threshold, determine, according to the second rule, to perform a fourth search Whether the sixth number of candidate PDCCHs to be monitored on the spatial set is greater than a fourth threshold, where the fourth threshold is equal to the first threshold minus the third number of times.
  • the index value of the third search space set is greater than the index value of the first search space set and/or the index value of the second search space set .
  • the first rule is a monitoring counting rule of PDCCH used for repeated transmission; the second rule is a monitoring counting rule of PDCCH used for independent transmission.
  • the communication apparatus is a terminal device, and the processing unit may be a processor.
  • the communication device is a chip or a chip system
  • the processing unit may be a processing circuit, a logic circuit, or the like.
  • a communication apparatus comprising: a processing unit configured to: determine that the time-frequency resources corresponding to the first candidate physical downlink control channel PDCCH overlap with the time-frequency resources corresponding to the second candidate PDCCH, the first candidate PDCCH used for repeated transmission of the first downlink control information DCI, the second candidate PDCCH is used for repeated transmission of the second DCI; the first DCI is detected on the first candidate PDCCH, wherein the first candidate The index value of the first search space set to which the PDCCH belongs is smaller than the index value of the second search space set to which the second candidate PDCCH belongs.
  • the processing unit is specifically configured to: detect the first DCI on the first candidate PDCCH and the third candidate PDCCH, wherein the third The third set of search spaces to which the candidate PDCCH belongs is associated with the first set of search spaces.
  • the processing unit is further configured to: detect the second DCI on a fourth candidate PDCCH, where the fourth search to which the fourth candidate PDCCH belongs A set of spaces is associated with the second set of search spaces.
  • the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships: the first candidate PDCCH and the second candidate PDCCH have The same scrambling sequence; the first candidate PDCCH and the second candidate PDCCH are associated with the same control resource set; the first candidate PDCCH and the second candidate PDCCH carry the same bit size of downlink control information.
  • the communication apparatus is a terminal device, and the processing unit may be a processor.
  • the communication device is a chip or a chip system
  • the processing unit may be a processing circuit, a logic circuit, or the like.
  • a communication device comprising: a processing unit configured to: determine that the time-frequency resources corresponding to the first candidate physical downlink control channel PDCCH overlap with the time-frequency resources corresponding to the second candidate PDCCH, and the time-frequency resources corresponding to the third candidate PDCCH The time-frequency resources and the time-frequency resources corresponding to the fourth candidate PDCCH overlap, the first candidate PDCCH and the third candidate PDCCH are used for repeated transmission of the first downlink control information DCI, and the second candidate PDCCH and the The fourth candidate PDCCH is used for repeated transmission of the second downlink control information DCI; the first DCI is detected on the first candidate PDCCH and the third candidate PDCCH, wherein the first candidate PDCCH to which the first candidate PDCCH belongs The index value of the search space set and/or the index value of the third search space set to which the third candidate PDCCH belongs is smaller than the index value of the second search space set to which the second candidate PDCCH belongs and the index value of the fourth candidate PDCCH
  • the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships: the first candidate PDCCH and the second candidate PDCCH have The same scrambling sequence; the first candidate PDCCH and the second candidate PDCCH are associated with the same control resource set; the first candidate PDCCH and the second candidate PDCCH carry the same bit size of downlink control information.
  • the communication apparatus is a terminal device, and the processing unit may be a processor.
  • the communication device is a chip or a chip system
  • the processing unit may be a processing circuit, a logic circuit, or the like.
  • a communication device comprising: a processing unit configured to: determine that a time-frequency resource corresponding to a first candidate physical downlink control channel PDCCH overlaps with a time-frequency resource corresponding to a second candidate PDCCH, the second candidate PDCCH belongs to the second search space set; according to the first rule, determine the number of candidate PDCCHs that need to be monitored on the first candidate PDCCH and the third candidate PDCCH, and the first search space set to which the first candidate PDCCH belongs is the same as the first candidate PDCCH.
  • the third search space set to which the third candidate PDCCH belongs is associated, the second search space set is used for independent PDCCH transmission, and the first rule is a monitoring counting rule for PDCCHs that are repeatedly transmitted.
  • the index value of the first search space set is greater than the index value of the second search space set.
  • the index value of the third search space set is greater than the index value of the second search space set.
  • the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships: the first candidate PDCCH and the second candidate PDCCH have The same scrambling sequence; the first candidate PDCCH and the second candidate PDCCH are associated with the same control resource set; the first candidate PDCCH and the second candidate PDCCH carry the same bit size of downlink control information.
  • the communication apparatus is a terminal device, and the processing unit may be a processor.
  • the communication device is a chip or a chip system
  • the processing unit may be a processing circuit, a logic circuit, or the like.
  • a communication device including a processor.
  • the processor is coupled to the memory, and can be used to execute the instructions in the memory, so as to implement the communication method of the first aspect to the fourth aspect and any possible implementation manner of the first aspect to the fourth aspect.
  • the communication apparatus is a terminal device, and the processing unit may be a processor.
  • the communication device is a chip or a chip system
  • the processing unit may be a processing circuit, a logic circuit, or the like.
  • the communication device further includes a communication interface.
  • the communication device is a terminal device, and the communication interface may be a transceiver, a receiver or a transmitter, etc.; optionally, the communication device is a chip or a chip system, and the communication interface is an interface circuit, Input and/or output interfaces, or, input and/or output circuits, etc.
  • the communication apparatus further includes the memory.
  • a tenth aspect provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a communication device, enables the communication device to implement the above-mentioned first to fourth aspects and the first to fourth aspects
  • the communication method in any one of the four possible implementations.
  • a computer program product comprising instructions, which, when executed by a computer, cause a communication device to implement any of the first to fourth aspects and any possible implementation manners of the first to fourth aspects. communication method.
  • FIG. 1 is a schematic flowchart of PDCCH repeated transmission definition.
  • FIG. 2 is a schematic diagram of repeated transmission of PDCCH based on multiple transmission and reception points.
  • FIG. 3 is a schematic diagram of repeated transmission of candidate PDCCHs for two search space sets.
  • FIG. 4 is a flowchart of UE monitoring candidate PDCCH.
  • FIG. 5 is a schematic diagram of PDCCH repeated transmission performed by four search space sets.
  • FIG. 6 is a schematic flow chart of a method for information detection.
  • FIG. 7 is a schematic diagram of 4 candidate PDCCHs for repeated transmission.
  • FIG. 8 is a schematic flow chart of another method for information detection
  • FIG. 9 is a schematic diagram of another 4 candidate PDCCHs used for repeated transmission.
  • FIG. 10 is a schematic flow chart of another method for information detection.
  • FIG. 11 is a schematic diagram of three candidate PDCCH transmissions.
  • FIG. 12 is a schematic diagram of another 3 candidate PDCCH transmission.
  • FIG. 13 is a schematic flow chart of another method for information detection.
  • FIG. 14 is a schematic block diagram of a communication apparatus according to an embodiment of the present application.
  • FIG. 15 is a schematic block diagram of another communication apparatus according to an embodiment of the present application.
  • FIG. 16 is a schematic block diagram of another communication apparatus according to an embodiment of the present application.
  • FIG. 17 is a schematic block diagram of another communication apparatus according to an embodiment of the present application.
  • FIG. 18 is a schematic block diagram of another communication apparatus according to an embodiment of the present application.
  • the embodiments of the present application may be applied to various communication systems, such as a wireless local area network (WLAN), a narrowband Internet of things (NB-IoT), a global system for mobile communications (global system for mobile communications, GSM), enhanced data rate for GSM evolution (enhanced data rate for gsm evolution, EDGE), wideband code division multiple access (WCDMA), code division multiple access 2000 system (code division multiple access) access, CDMA2000), time division-synchronization code division multiple access (TD-SCDMA), long term evolution (LTE), satellite communication, 5th generation (5G) system or a new communication system that will appear in the future.
  • WLAN wireless local area network
  • NB-IoT narrowband Internet of things
  • GSM global system for mobile communications
  • GSM global system for mobile communications
  • enhanced data rate for GSM evolution enhanced data rate for gsm evolution, EDGE
  • WCDMA wideband code division multiple access
  • CDMA2000 code division multiple access 2000 system
  • TD-SCDMA time division-synchronization
  • a communication system applicable to this application includes one or more transmitters and one or more receivers.
  • the signal transmission between the sending end and the receiving end can be transmitted through radio waves, or through transmission media such as visible light, laser, infrared, and optical fibers.
  • one of the sending end and the receiving end may be a terminal device, and the other may be a network device.
  • the terminal devices involved in the embodiments of the present application may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem.
  • the terminal can be a mobile station (mobile station, MS), a subscriber unit (subscriber unit), user equipment (user equipment, UE), a cellular phone (cellular phone), a smart phone (smart phone), a wireless data card, a personal digital assistant ( personal digital assistant, PDA) computer, tablet computer, wireless modem (modem), handheld device (handset), laptop computer (laptop computer), machine type communication (machine type communication, MTC) terminal, etc.
  • the network device may be an evolved Node B (evolved Node B, eNB), a radio network controller (RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC) ), base transceiver station (base transceiver station, BTS), home base station (home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), wireless fidelity (wireless fidelity, WIFI) system connection Access point (AP), wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc. It can also be a new air interface (new radio, gNB or transmission point (e.g.
  • TRP or TP in NR
  • a network node such as a baseband unit that constitutes a gNB or transmission point (building baseband unit, BBU) or distributed unit (distributed unit, DU), or the like
  • the network device can also be a vehicle-mounted device, a wearable device, a network device in a 5G network, or a network device in a future evolved PLMN network etc., without limitation.
  • the BBU can be integrated with a radio frequency unit (Radio Frequency Unit, RFU) in the same device, and the device is connected to the antenna array through a cable (such as but not limited to a feeder).
  • RFU Radio Frequency Unit
  • the BBU can also be set apart from the RFU, and the two are connected by optical fibers, and communicate through, for example, but not limited to, the Common Public Radio Interface (Common Public Radio Interface, CPRI) protocol.
  • the RFU is usually called an RRU (Remote Radio Unit), which is connected to the antenna array through a cable.
  • the RRU can also be integrated with the antenna array.
  • the active antenna unit (Active Antenna Unit, AAU) product currently on the market adopts this structure.
  • the BBU can be further broken down into multiple parts.
  • the BBU can be further subdivided into a centralized unit (Centralized Unit, CU) and a distributed unit (Distribute Unit, DU) according to the real-time nature of the processed services.
  • the CU is responsible for processing non-real-time protocols and services
  • the DU is responsible for processing physical layer protocols and real-time services.
  • some physical layer functions can also be separated from the BBU or DU and integrated in the AAU.
  • downlink control information is divided into many formats, such as random access identifier, paging identifier, etc., physical downlink control channel (PDCCH) of different users.
  • the information is distinguished by its corresponding cell-radio network temporary identity (C-RNTI) information, that is, the cyclic redundancy check (CRC) of the DCI is masked by the C-RNTI.
  • C-RNTI cell-radio network temporary identity
  • the base station configures a set of candidate PDCCHs (PDCCH candidates) that need to monitor DCI to the UE through high-layer signaling, such as radio resource control (radio resource control, RRC) signaling.
  • RRC radio resource control
  • the UE Since the UE does not know in advance which PDCCH set or sets the base station will send DCI on, but the user knows what downlink control information it currently expects to receive according to the base station configuration information, the UE must try each PDCCH in the candidate PDCCH set according to the configuration information. Decoding, that is, the UE uses the corresponding RNTI to perform a CRC check on the information on the PDCCH set. If the CRC check is successful, the user successfully decodes and obtains the DCI information. All candidate PDCCH sets form a search space set (search space set, SS set). The behavior that the UE attempts to decode on each candidate PDCCH to determine whether the corresponding DCI is received is called blind detection (BD).
  • BD blind detection
  • two candidate PDCCHs counted as one blind detection need to satisfy one or more of the following four conditions at the same time:
  • control resource set control resource set, CORESET
  • the above four conditions can be understood as four conditions optionally included in the blind detection counting rule. It can also be understood that the two candidate PDCCHs are counted as one blind detection, and the two candidate PDCCHs obtain one candidate PDCCH for monitoring according to the blind detection counting rule.
  • the number of blind detection times of a search space set can be understood as the number of candidate PDCCHs to be monitored obtained after a search space set passes the counting rule of the number of blind detection times. It is worth noting that the four conditions included in the above blind inspection counting rules are only examples. This application does not limit the number of blind inspections to be counted as 1. The conditions only include the above conditions, and any one of them can be added, deleted or changed. item or multiple items.
  • condition may further include: the first candidate PDCCH and the second candidate PDCCH are respectively associated with the same CORESET, or correspond to different CORESETs but have the same scrambling code, or correspond to different CORESETs but have the same quasi-co-location characteristics.
  • condition may further include: CORESETs corresponding to the first candidate PDCCH and the second candidate PDCCH respectively are single-symbol (symbol) and non-interleaved CORESETs.
  • using the same set of CCEs indicates that the first candidate PDCCH and the second candidate PDCCH have the same aggregation level and the same CCE time-frequency position.
  • Non-overlapping control channel elements (non-overlapping CCE)
  • the aggregation level indicates the number of CCEs occupied by one PDCCH.
  • New radio (NR) supports 5 aggregation levels ⁇ 1, 2, 4, 8, 16 ⁇ .
  • the base station configures one or more search space sets (search space sets, SS sets) for the UE through high-level signaling (up to 10 SS sets are configured on one bandwidth part (BWP)), which requires blind
  • the detected DCI format is bound to the SS set.
  • the UE will attempt to decode the bundled DCI format on each candidate PDCCH of all configured SS sets until all candidate PDCCHs have been checked. Since the blind detection will bring great complexity and power consumption to the UE, the UE cannot be blindly checked all the time, and an upper limit will be set. After the number of blind detections reaches this upper limit, the blind detection will be stopped regardless of whether the expected DCI is detected or not. .
  • the number of non-overlapping channel estimation CCEs also has an upper limit, otherwise it will increase the complexity and storage burden of UE channel estimation processing.
  • the upper limit of blind detection and the upper limit of non-overlapping CCEs are fixed values bound to the subcarrier spacing.
  • the network device may adopt a manner of repeatedly sending the PDCCH.
  • PDCCH There are multiple ways to repeatedly transmit PDCCH. Multiple PDCCHs carrying the same DCI can be sent from different times, different frequencies or through different beams, or multiple PDCCHs carrying the same DCI can be sent to a terminal simultaneously through multiple transmission points. For example, that the PDCCH is repeatedly transmitted twice means that the same DCI is repeatedly transmitted twice.
  • the PDCCH repeated transmission may be defined as follows: multiple PDCCHs use the same aggregation level (aggregation level, AL) to transmit the same DCI, and the encoded bits carried in the multiple PDCCHs are also the same.
  • AL aggregation level
  • PDCCH for independent transmission of DCI may also be referred to as “individual PDCCH” (individual PDCCH) or “PDCCH for independent transmission”
  • a candidate PDCCH that can be used as an independent PDCCH may be referred to as "individual candidate PDCCH” (individual PDCCH) PDCCH candidate)
  • the SS set including the individual PDCCH candidate can be called an independent SS set (individual SS set).
  • the independent PDCCH does not need to perform PDCCH repetition or soft combining with other PDCCHs.
  • Different search space sets may be configured with association relationships (linkage) for PDCCH repeated transmission, and the association relationship may be indicated to the terminal by the network device through indication information, such as adding another associated one to the configuration information of one search space set.
  • the association between the two search space sets means that the candidate PDCCHs in one search space set are in one-to-one correspondence with the candidate PDCCHs in the other search space set and are used for PDCCH repeated transmission.
  • a candidate PDCCH in one search space set may be associated with a corresponding candidate PDCCH in another search space set, and used for transmitting the same DCI.
  • the corresponding candidate PDCCHs may be candidate PDCCHs in search spaces under the same aggregation level in different search space sets.
  • sequence numbers of the corresponding candidate PDCCHs are the same, or there is another preset association relationship between the sequence numbers of the corresponding candidate PDCCHs, for example, there is a predefined offset between the sequence numbers of the candidate PDCCHs.
  • the associated candidate PDCCH for PDCCH repeated transmission is referred to as linked PDCCH candidate(s)
  • the search space set including the associated candidate PDCCH for PDCCH repeated transmission is referred to as linked SS set(s).
  • two associated candidate PDCCHs may be used for repeated PDCCH transmission.
  • These two candidate PDCCHs may be referred to as a linked PDCCH candidate pair or a pair of linked PDCCH candidates, and the SS sets to which the two candidate PDCCHs belong may be referred to as A pair of linked SS sets, or a pair of linked SS sets, the number of PDCCH candidates contained in a pair of linked SS sets is the same, and there is a one-to-one correspondence between PDCCH candidates.
  • a pair of linked SS sets may contain one or more pairs of linked PDCCH candidates, each pair of linked PDCCH candidates is used to transmit one DCI respectively, and the DCI transmitted by different pairs of linked PDCCH candidates may be the same or different.
  • the network device selects a pair of linked PDCCH candidates to transmit DCI#1 and selects another pair of linked PDCCH candidates to transmit DCI#2; for another example, the network device selects a pair of linked PDCCH candidates during the first transmission of DCI#1 to transmit DCI#1, and during the second transmission of DCI#1, select another pair of linked PDCCH candidates to transmit DCI#1.
  • the present application does not limit the number of candidate PDCCHs used for repeated DCI transmission, and the above linked PDCCH candidates are not limited to only two, and there may be more than two linked PDCCH candidates to transmit the same DCI, correspondingly, more than two linked PDCCH candidates belong to two or more linked SS sets.
  • PDCCH repeat transmission The coding/rate matching operation is based on 1 PDCCH repeat transmission, and other PDCCH repeat transmission of the same coded bits, each time Repeated transmissions use the same aggregation level (AL) or the same number of CCEs, repeat the transmission of the same coded bits, and the same DCI load information (the content of the DCI bits is the same), as shown in Figure 1, showing A schematic flowchart of the definition of PDCCH repeated transmission.
  • the process may also contain other functional modules, only the more relevant modules are listed here. Among them, the DCI load bits, CRC attachment, coding and rate matching are the places that need to be guaranteed to be the same for PDCCH repeated transmission.
  • the joint transmission mechanism of multiple transmission and reception points can be used to improve the reliability of DCI transmission.
  • multiple TRPs send them on the same or different time-frequency resources, respectively, and the UE can receive multiple bits on the above-mentioned time-frequency resources.
  • perform joint decoding operation to obtain DCI information bits (sources), for example, perform channel estimation on the above time-frequency resources and demodulate the received signals to obtain likelihood values (soft information) for combining.
  • the above operations can be equivalently understood as improving the signal to interference plus noise ratio (SINR) of transmission, thereby improving reliability.
  • SINR signal to interference plus noise ratio
  • TRP1 and TRP2 serve as cooperative base stations for one UE at the same time.
  • the DCI delivered by TRP1 corresponds to CORESET1 (where the first quasi-co-location or the first quasi-co-location feature (QCL) is configured, assuming the channel characteristics from the terminal to TRP1)
  • the DCI delivered by TRP2 corresponds to CORESET2 (wherein The second QCL hypothesis is configured to correspond to the channel characteristics of the terminal to TRP2).
  • Two CORESETs may be configured with complete/partial overlap to improve the flexibility of DCI transmission and ensure the gain of frequency selective scheduling.
  • the DCIs issued by the two CORESETs have a linkage, that is, the above-mentioned soft combining operation can be performed.
  • an association relationship between candidate PDCCHs associated with two CORESETs needs to be defined. The purpose of this is to prevent the UE from performing too many soft combining operations to reduce the complexity of the UE.
  • the current protocol supports that all candidate PDCCHs in one SS set are used for PDCCH repeated transmission, excluding candidate PDCCHs for sending independent PDCCHs.
  • FIG. 3 a schematic diagram of repeated transmission of candidate PDCCHs of two search space sets is shown.
  • the base station configures the association relationship through RRC parameters or media access control-control element (MAC CE) on the two SS sets used for PDCCH repeated transmission, that is, SS set#i and SS set#j can be It is called the linked search space set (linked SS set).
  • the candidate PDCCHs used for PDCCH repeated transmission are divided between the two candidate PDCCHs of the two SS sets. Assuming that 1 SS set#i includes aggregation levels AL4 and AL8, the number of corresponding candidate PDCCHs is 4 and 2 respectively. According to the definition of PDCCH repeated transmission, the PDCCH repeated transmission of AL4 can only be realized by two PDCCH candidates of AL4, but not one PDCCH candidate of AL4 and one PDCCH candidate of AL8.
  • the association shown in FIG. 3 can be obtained.
  • the candidate PDCCH sequence number 1 of SS set#i and the candidate PDCCH sequence number 1 of SS set#j perform PDCCH repeated transmission together, and the PDCCH candidate sequence number 2 of SS set#i and the PDCCH candidate sequence number 2 of SS set#j together Repeated transmission of PDCCH is performed, which are respectively referred to as associated candidate PDCCHs.
  • the candidate PDCCH sequence number 1 of SS set#i is used for PDCCH repeated transmission together with the candidate PDCCH sequence number 1 of SS set#j.
  • the number of candidate PDCCHs corresponding to each aggregation level (aggregation level, AL) configured for blind detection of PDCCH is fixed, as shown in Table 1, which shows the number of candidate PDCCHs monitored by the UE.
  • the number of DCI formats that need to be monitored in CSS and USS is at most 4 DCI format X bound to transmission mode (TM) in USS, DCI format 1C in CSS, and both in USS and CSS.
  • Some DCI formats are 1A, so the maximum number of blind checks can be calculated as 44 times.
  • the calculation method is the number of blind checks of CSS (4+2)*2 plus the number of blind checks of USS (6+6+2+2)*2 , the candidate PDCCH configured by the base station will not cause the UE to blindly detect more than 44 times.
  • the number of PDCCH candidates corresponding to CSS and USS configured by the base station is flexibly configured, not a predefined value, so overbooking may occur, that is, according to the configuration of PDCCH and BD
  • the number of monitored PDCCH candidates and the number of non-overlapping CCEs calculated by the /CCE counting rule can exceed the BD/CCE limit. At this time, if all PDCCH candidates are blindly checked according to the configuration, it will cause great complexity for UE implementation. .
  • NR introduces a mechanism to ensure that the UE will only monitor those candidate PDCCHs that do not exceed its own PDCCH monitoring capability, that is, through the three rules of BD counting rules, non-overlapping CCE counting rules and PDCCH mapping rules, the overall process is shown in Figure 4 As shown, a flow chart of UE monitoring candidate PDCCH is shown. Among them, the three functional modules in the dotted line may be executed sequentially. For example, input the PDCCH configuration into the "BD counting rule" module and the "CCE counting module” respectively for operation, and then input the two obtained results together into the "PDCCH mapping rule".
  • the PDCCH mapping rule (PDCCH mapping rule) is defined in Protocol 38.213 to screen the PDCCH candidates configured by the base station, and screen the number of PDCCH candidates that need to be blindly checked within a range, so as to ensure the achievability of the UE.
  • the "blind detection upper limit” is equivalent to the "maximum number of detected PDCCH candidates”.
  • Priority The concept of "priority" in this application may be manifested explicitly or implicitly. Explicit, that is, to specifically determine the priority; Implicit, that is, not to specifically determine the priority, but from the order of processing, the priority can be reflected, such as the count of the number of blind checks or the number of candidate PDCCHs for monitoring. Count, according to the order of the count as the priority.
  • the priority rule may be related to the index (for example, the smaller the index value of the search space set, the higher the priority of the search space set, or the smaller the index value of the control resource set associated with the search space set is , the higher the priority of the search space set), it can also be related to the nature, for example, the transmission nature (including independent transmission and repeated transmission), the transmission priority can be divided according to the independent transmission and repeated transmission, for example, the priority of repeated transmission The priority is higher than that of independent transmission, or the priority of independent transmission is higher than that of repeated transmission.
  • the associated candidate PDCCH (linked PDCCH candidate) is used for PDCCH repeated transmission, and different UE decoding behaviors will lead to different blind detection counting results.
  • Option 1 The UE reports one or more blind detection values required to monitor two linked PDCCH candidates. Possible candidates are 2, X, where X is a value between 1 and 3. "2" indicates that the UE needs 2 blind checks to monitor 2 linked PDCCH candidates.
  • Option 2 The UE reports whether soft combining is supported. If the report supports soft combining, the UE further reports one or more blind detection values required for monitoring two linked PDCCH candidates. Possible candidates are 2, X, where X is a value between 1 and 3. Compared with option 1, option 2 has one more report on whether soft merging is supported.
  • Option 3 The UE needs to report 1 or more of the 4 decoding assumptions.
  • the protocol will define 1 blind detection times corresponding to each decoding option.
  • the decoding assumption is that the UE monitors the decoding of 2 linked PDCCH candidates.
  • Behavior compared to other options, this option has a definition and indication for the behavior of the UE.
  • Decoding Assumption 1 The number of blind checks is 2, or a value between 1 and 2. Under this assumption, the UE will not independently decode the two linked PDCCH candidates, but will only combine and decode the two linked PDCCH candidates once.
  • Decoding Assumption 2 The number of blind detections is 2. Under this assumption, the UE performs an independent decoding on each of the two linked PDCCH candidates.
  • Decoding Assumption 3 The number of blind checks is 2, or other values. Under this assumption, the UE performs independent decoding on the first PDCCH candidate among the two linked PDCCH candidates, and then combines and decodes the two linked PDCCH candidates once.
  • Decoding Assumption 4 The number of blind checks is 3, or other values. Under this assumption, the UE performs independent decoding on the two linked PDCCH candidates respectively, and then combines and decodes the two linked PDCCH candidates once.
  • Option 4 Regardless of the UE's decoding assumption, the number of blind checks required for the UE to monitor 2 linked PDCCH candidates is always defined as 2 times.
  • Option 5 Regardless of the UE's decoding assumption, the number of blind checks required for the UE to monitor 2 linked PDCCH candidates is always defined as 3 times.
  • option 1 since the UE may report multiple values, when the UE reports multiple values, the base station will configure one of them for blind detection count definition.
  • mapping priority is also referred to as "PDCCH mapping priority” or “search space set mapping priority”.
  • FIG. 5 a schematic diagram of PDCCH repeated transmission with four search space sets is shown.
  • search space set 3 (SS set 3) and SS set 5 are associated, that is, SS set 3 and SS set 5 are used for PDCCH repeated transmission; SS set 4 and SS set 6 are also associated.
  • the PDCCH mapping priority is arranged from high to low according to the search space set index from small to large, then if the greater than symbol ">" indicates the high or low PDCCH mapping priority, then SS set 3>SS set 4>SS set 5 >SS set 6. For these 4 SS sets, start from SS set 3 and enter the PDCCH mapping rule one by one for calculation.
  • the current mapping operation will not be performed, that is, the UE will not monitor the candidate PDCCHs in SS set 4 to SS set 6, but only monitor the candidate PDCCH in SS set 3. candidate PDCCH, then the repeated transmission of PDCCH cannot be realized.
  • the base station will explicitly configure an association relationship between the two SS sets used to transmit the same PDCCH or PDCCH repeated transmission through RRC parameter configuration or MAC CE. If this association relationship is considered, consider as much as possible
  • a natural idea is that two SS sets with an associated relationship participate in the BD count and PDCCH mapping rule judgment operations together. If the number of BDs corresponding to a pair of linked SS sets exceeds the upper limit of the remaining BDs, if the whole is discarded. Generally speaking, the number of BDs corresponding to the linked SS set will be greater than the number of BDs corresponding to the individual SS set. Therefore, discarding the linked SS set as a whole will result in loss of PDCCH resources, resulting in reduced utilization of PDCCH resources and affecting the flexibility of base station scheduling.
  • an embodiment of the present application proposes a method for information detection, which can improve the utilization rate of PDCCH resources, thereby improving the flexibility of base station scheduling.
  • FIG. 6 a schematic flowchart of a method 600 for information detection is shown.
  • the specific process of this method includes:
  • the terminal device determines, according to the first rule, that the first number of times that the candidate physical downlink control channel PDCCH needs to be monitored on the first search space set and the second search space set is greater than the first threshold, where the first search space set is the same as the first search space set.
  • Two sets of search spaces are associative.
  • the first search space set and the second search space set are associated, and it can be understood that the first search space set and the second search space set are used for repeated PDCCH transmission, or for transmission of the same PDCCH.
  • the first threshold is the upper limit of the remaining monitoring times, and the monitoring times can be understood as the blind detection times or decoding times or the times of monitoring candidate PDCCHs.
  • the first rule is a monitoring counting rule for the PDCCH used for repeated transmission, including the monitoring counting rule defined in any one of option 1 to option 5.
  • the terminal device receives Resource configuration information sent by a base station or a network device, where the resource configuration information may include indication information or signaling for indicating that the first search space set and the second search space set are associated.
  • the resource configuration information includes not only indication information indicating the first search space set and the second search space set, but also indication information indicating at least a third search space set and a fourth search space set.
  • the terminal device determines, according to the second rule, whether the second number of candidate PDCCHs that need to be monitored on the first search space set is greater than the first threshold; or, the terminal device determines at least one candidate PDCCH that needs to be monitored on the third search space set. Whether the third number of PDCCHs is greater than the first threshold.
  • the second rule is the monitoring counting rule of PDCCH used for independent transmission, that is, the candidate PDCCH to be monitored is used for independent transmission of DCI, and each DCI is only transmitted once instead of multiple times.
  • the second rule may also be other preset rules, which are not specifically limited in this application.
  • the terminal device may, according to the second rule, only It is determined whether the second number of candidate PDCCHs that need to be monitored on the first set of search spaces is greater than a first threshold. At this time, the terminal device considers that the first search space set is used for PDCCH independent transmission (or the first search space set is regarded/assumed to be used for PDCCH independent transmission), and is no longer used for PDCCH repeated transmission.
  • the index value of the first search space set is smaller than the index value of the second search space set, that is, the priority of the first search space set is higher than the priority of the second search space set.
  • the smaller the index value for defining the search space set the higher the priority of the search space set. It should be understood that it can also be defined that the larger the index value of the search space set, the higher the priority of the search space set, which is not limited.
  • the terminal device may discard the first search space set and the second search space set, and at the same time, the first search space set and The remaining search space sets other than the second search space set that do not participate in the operation of the PDCCH mapping rule are also discarded. Discarding the first search space set and the second search space set, it can be understood that the candidate PDCCH is not monitored on the first search space set and the second search space set, and the upper limit of the remaining monitoring times is not subtracted from the first search space set and The number of listening times corresponding to the second search space set.
  • the terminal device determines that the candidate PDCCH for independent transmission can be monitored on the first search space set.
  • the upper limit value is subtracted from the listening times corresponding to the first search space set, the second search space set is discarded, and the remaining search space sets except the second search space set and the second search space set are also discarded. Discarding the second search space set can be understood as not monitoring the candidate PDCCH on the second search space set, and the upper limit of the remaining monitoring times is not subtracted from the monitoring times corresponding to the second search space set.
  • the terminal device determines, according to the resource configuration information sent by the base station or the network device, that SS set 3 and SS set 5 are a pair of SS sets used for PDCCH repeat transmission, and SS set 4 and SS set 6 are another pair used for PDCCH repeat transmission.
  • SS set 3 and SS set 5 participate in the calculation of mapping rules together, which can be understood as the mapping priority of SS set 5
  • the level is the same as SS set 3, or the mapping priority is next to SS set 3.
  • the smallest index in the remaining SS sets is SS set 4.
  • the mapping priority of SS set 6 is the same as that of SS set 4, or the mapping priority of SS set 6 is second only to SS set 4.
  • the protocol adopts the monitoring count method of option 5 to determine the monitoring times of the two associated candidate PDCCHs (linked PDCCH candidates), that is, the monitoring times of the two associated candidate PDCCHs is 3 times.
  • 3 candidate PDCCHs are configured in SS set 3, and the associated candidate PDCCHs defined by the current protocol are in one-to-one correspondence, then 3 candidate PDCCHs are also configured in SS set 5.
  • SS set 4 is configured with 1 candidate PDCCH
  • SS set 6 is also configured with only 1 candidate PDCCH.
  • the number of monitoring times corresponding to this pair of associated candidate PDCCHs is 3, that is, SS set 4 and SS set 6 are one A total of 3 monitoring sessions.
  • the upper limit of the remaining monitoring times is 8 times, that is, the first threshold is 8 times
  • the monitoring count result (the first time) of the associated SS set 3 and SS set 5 exceeds the upper limit of the remaining monitoring times (the first time). threshold).
  • the priority of SS set 3 is higher than that of SS set 5.
  • the other SS sets which can also be called the remaining SS sets, can be understood as the SS sets that have not yet participated in the PDCCH mapping rule operation, including SS set 4 and SS set 6. It can also be understood that the indices of the SS sets that have not yet participated in the operation of the PDCCH mapping rule at this time are all larger than the indices of SS set 3.
  • SS set 3 Since the terminal device considers that SS set 3 is used for PDCCH independent transmission, and 3 candidate PDCCHs are configured in SS set 3, then SS set 3 is counted as 3 times of monitoring (the second time), and if it does not exceed 8 times, the terminal device determines that the The candidate PDCCH for independent transmission is monitored on SS set 3, and SS set 5 and other SS sets are discarded.
  • the terminal device may determine according to the second rule Whether the second number of candidate PDCCHs that need to be monitored on the first search space set is greater than the first threshold; if the second number of times is less than the first threshold, the terminal device determines, according to the second rule, the candidate PDCCHs that need to be monitored on the second search space set. Whether the fourth number of candidate PDCCHs is greater than a second threshold, where the second threshold is equal to the first threshold minus the second number. At this time, the terminal device considers that both the first search space set and the second search space set are used for PDCCH independent transmission, and are no longer used for PDCCH repeated transmission.
  • the terminal device may monitor the PDCCH for independent transmission on the first search space set, discard the second search space set, and at the same time remove the first search space set
  • the remaining search space sets other than the space set and the second search space set are also discarded, and the difference between the upper limit value of the remaining listening times minus the listening times corresponding to the first search space set is taken as the updated upper limit value of the remaining listening times .
  • the terminal device may monitor the PDCCH for independent transmission on the first search space set and the second search space set, while dividing the first The remaining search space sets other than the search space set and the second search space set are discarded, and the difference between the upper limit value of the remaining listening times minus the listening times corresponding to the first search space set and the second search space set is used as the updated The upper limit of the remaining monitoring times.
  • the terminal device determines, according to the resource configuration information sent by the base station or the network device, that SS set 3 and SS set 5 are a pair of SS sets used for PDCCH repeat transmission, and SS set 4 and SS set 6 are another pair used for PDCCH repeat transmission.
  • SS set 3 and SS set 5 participates in the calculation of mapping rules together, which can be understood as the mapping priority of SS set 5 is the same as that of SS set 3, or the mapping priority is second only to SS set 3.
  • the smallest index in the remaining SS sets is SS set 4.
  • the mapping priority of SS set 6 is the same as that of SS set 4, or the mapping priority of SS set 6 is second only to SS set 4.
  • 3 candidate PDCCHs are configured in SS set 3, and the associated candidate PDCCHs defined by the current protocol are in one-to-one correspondence, then 3 candidate PDCCHs are also configured in SS set 5.
  • SS set 4 is configured with 1 candidate PDCCH
  • SS set 6 is also configured with only 1 candidate PDCCH.
  • the number of monitoring times corresponding to this pair of associated candidate PDCCHs is 3, that is, SS set 4 and SS set 6 are one A total of 3 monitoring sessions. Assuming that the upper limit of the remaining monitoring times is 8 times, that is, the first threshold is 8 times, the monitoring count results (the first times) of the associated SS set 3 and SS set 5 are greater than the upper limit of the remaining monitoring times (the first time threshold).
  • the terminal device considers that SS set 3 and SS set 5 are used for PDCCH independent transmission.
  • the priority of SS set 3 is higher than that of SS set 5, and the candidates to be monitored are determined on SS set 3.
  • the terminal device determines whether the fourth number of candidate PDCCHs that need to be monitored on SS set 5 exceeds a second threshold, and the second threshold is equal to the first threshold minus the second number of times.
  • the terminal device determines to monitor candidate PDCCHs for independent transmission on SS set 3 and SS set 5, and discards other SS sets, such as discarding SS set 4 and SS set 6; if the fourth number of times is greater than the second threshold, the terminal device determines to monitor the candidate PDCCH for independent transmission on SS set 3, and discards SS set 5, SS set 4, SS set 6 and other SS sets.
  • the terminal device may determine according to the second rule Whether the second number of candidate PDCCHs that need to be monitored on the first search space set is greater than the first threshold; if the second number of times is less than the first threshold, the terminal device determines, according to the second rule, the candidate PDCCHs that need to be monitored on the second search space set. Whether the fourth number of candidate PDCCHs is greater than a second threshold, where the second threshold is equal to the first threshold minus the second number.
  • the terminal device may determine whether the fifth number of times of the candidate PDCCHs that need to be monitored on at least one third search space set is greater than the third threshold. , where the third threshold is equal to the second threshold minus the fourth number of times.
  • the index value of the third search space set may be greater than the index value of the first search space set and the index value of the second search space set; in the case where the index value of the first search space set is smaller than the index value of the second search space set
  • the index value of the third search space set may also be only greater than the index value of the first search space set and less than the index value of the second search space set. It should be understood that if the index value of the second search space set is smaller than the index value of the first search space set, the index value of the third search space set may also be only greater than the index value of the second search space set, and less than the first search space set. index value of .
  • Sub-mode 3.1 Specifically, the terminal device may determine, according to the second rule, whether the fifth number of times of candidate PDCCHs to be monitored on at least one third search space set is greater than a third threshold, wherein the at least one third search space set The spatial set is used for PDCCH independent transmission. In other words, the terminal device only determines whether the fifth number of times the candidate PDCCH needs to be monitored is greater than the third threshold on at least one third set of search spaces for independent transmission.
  • the terminal device determines that SS set 3 and SS set 5 are a pair of SS sets used for PDCCH repeated transmission, and SS set 4 and SS set 6 are both used for PDCCH independent transmission.
  • SS set Since SS set 3 is the SS set with the smallest search space set index among the four SS sets, the mapping priority is the highest, and SS set 5 is the SS set associated with SS set 3 for PDCCH repeated transmission.
  • SS set 3 and SS set 5 participates in the calculation of mapping rules together, which can be understood as the mapping priority of SS set 5 is the same as that of SS set 3, or the mapping priority is second only to SS set 3.
  • the smallest index among the remaining SS sets is SS set 4.
  • the protocol adopts the monitoring count method of option 5 to determine the monitoring times of the two associated candidate PDCCHs (linked PDCCH candidates), that is, the monitoring times of the two associated candidate PDCCHs is 3 times.
  • 3 candidate PDCCHs are configured in SS set 3, and the associated candidate PDCCHs defined by the current protocol are in one-to-one correspondence, then 3 candidate PDCCHs are also configured in SS set 5.
  • SS set 4 is configured with 1 candidate PDCCH
  • SS set 6 is also configured with only 1 candidate PDCCH.
  • the monitoring times corresponding to these two candidate PDCCHs are 1 respectively, that is, SS set 4 and SS set 6 are a total of 2 monitoring.
  • the monitoring count results (the first times) of the associated SS set 3 and SS set 5 are greater than the upper limit of the remaining monitoring times (the first time threshold).
  • the terminal device may determine whether the fifth number of times of the candidate PDCCH that needs to be monitored on SS set 4 (a third search space set) is greater than the third threshold, and SS set 4 is: SS set for PDCCH independent transmission. If the fifth number of times is less than or equal to the third threshold, it is determined that candidate PDCCHs for independent transmission are monitored on SS set 3, SS set 5 and SS set 4, and other SS sets are discarded. If the fifth number of times is greater than the third threshold, it is determined that only candidate PDCCHs for independent transmission are monitored on SS set 3 and SS set 5, and other SS sets are discarded.
  • the fourth time is equal to 3
  • the second threshold is 5
  • the terminal device may also determine whether the seventh number of times of the candidate PDCCH that needs to be monitored on SS set 6 (another third search space set) is greater than the upper limit of the remaining monitoring times (1 time), because SS set 6 It is used for PDCCH independent transmission, and SS set 6 is configured with 1 candidate PDCCH, that is, the seventh time is equal to 1, and the seventh time is equal to the upper limit of the remaining monitoring times (1 time), then the terminal device determines that the SS set 3, SS Candidate PDCCHs for independent transmission are monitored on set 5, SS set 4 and SS set 6.
  • Sub-mode 3.2 Specifically, the terminal device may determine, according to the first rule, whether the fifth number of candidate PDCCHs to be monitored on at least one third search space set is greater than a third threshold, where the third search space set is used for The PDCCH is repeatedly transmitted.
  • the terminal device may determine, according to the second rule, that the at least one third Whether the number of candidate PDCCHs that need to be monitored on the search space set is greater than the third threshold (at this time, the third search space set is regarded/assumed to be used for PDCCH independent transmission).
  • the terminal device determines, according to the resource configuration information sent by the base station or the network device, that SS set 3 and SS set 5 are a pair of SS sets used for PDCCH repeat transmission, and SS set 4 and SS set 6 are another pair used for PDCCH repeat transmission.
  • SS set 3 and SS set 5 participates in the calculation of the mapping rules together, which can be understood as the mapping priority of SS set 5 is the same as that of SS set 3, or the mapping priority is second only to SS set 3.
  • the smallest index in the remaining SS sets is SS set 4.
  • the mapping priority of SS set 6 is the same as that of SS set 4, or the mapping priority of SS set 6 is second only to SS set 4.
  • 3 candidate PDCCHs are configured in SS set 3, and the associated candidate PDCCHs defined by the current protocol are in one-to-one correspondence, then 3 candidate PDCCHs are also configured in SS set 5.
  • SS set 4 is configured with 1 candidate PDCCH
  • SS set 6 is also configured with only 1 candidate PDCCH.
  • the number of monitoring times corresponding to this pair of associated candidate PDCCHs is 3, that is, SS set 4 and SS set 6 are one A total of 3 monitoring sessions. Assuming that the upper limit of the remaining monitoring times is 8 times, that is, the first threshold is 8 times, the monitoring count results (the first times) of the associated SS set 3 and SS set 5 are greater than the upper limit of the remaining monitoring times (the first time threshold).
  • the terminal device may determine whether the fifth number of times of the candidate PDCCHs that need to be monitored on SS set 4 and SS set 6 is greater than the third threshold according to the first rule. If the fifth number of times is less than or equal to the third threshold, the terminal device determines to monitor candidate PDCCHs for repeated transmission on SS set 4 and SS set 6, and does not discard SS set 4 and SS set 6; if the fifth number of times is greater than the third threshold, the terminal device can consider that SS set 4 and SS set 6 are used for PDCCH independent transmission, and according to the second rule, determine whether the number of candidate PDCCHs that need to be monitored on SS set 4 or SS set 4 and SS set 6 is whether greater than the third threshold.
  • the fourth number of times is equal to 3, the second threshold is 5, the third threshold is 2, the resource configuration information indicates that SS set 4 and SS set 6 are used for PDCCH repeated transmission, and SS set 4 and SS set 6 are respectively configured with 1 candidate PDCCH, then the fifth time is equal to 3, that is, the fifth time is greater than the third threshold.
  • the terminal device can consider that SS set 4 and SS set 6 are used for PDCCH independent transmission, and determine the SS set according to the second rule. Whether the fifth number of candidate PDCCHs to be monitored on 4 and SS set 6 is greater than the third threshold.
  • the terminal device can determine to monitor candidate PDCCHs for independent transmission on SS set 3, SS set 5, SS set 4 and SS set 6.
  • the number of at least one third search space set may be one, two, or even more, which is not limited in this application.
  • the terminal device may determine that at least one third Whether the third number of candidate PDCCHs to be monitored on the search space set is greater than the first threshold. The terminal device discards the first set of search spaces and the second set of search spaces.
  • the terminal device may determine, according to the first rule, whether the third number of times of candidate PDCCHs that need to be monitored on the at least one third search space set is greater than the first threshold.
  • the terminal device may determine, according to the second rule, that the two associated Whether the number of candidate PDCCHs that need to be monitored on the third search space set is greater than the first threshold (at this time, the third search space set is regarded/assumed to be used for PDCCH independent transmission).
  • the terminal device may determine, according to the second rule, whether the third number of times the candidate PDCCH needs to be monitored on at least one third search space set is greater than the first threshold, wherein at least one third search space set is used for PDCCH independent transmission. Specifically, if the third number of times is less than the first threshold, the terminal device may determine, according to the second rule, whether the sixth number of times of candidate PDCCHs that need to be monitored on the fourth search space set is greater than the fourth threshold, where the first The four thresholds are equal to the first threshold minus the third number of times.
  • the terminal device determines, according to the resource configuration information sent by the base station or the network device, that SS set 3 and SS set 5 are a pair of SS sets used for PDCCH repeat transmission, and SS set 4 and SS set 6 are another pair used for PDCCH repeat transmission.
  • SS set 3 and SS set 5 participates in the calculation of mapping rules together, which can be understood as the mapping priority of SS set 5 is the same as that of SS set 3, or the mapping priority is second only to SS set 3.
  • the smallest index in the remaining SS sets is SS set 4.
  • the mapping priority of SS set 6 is the same as that of SS set 4, or the mapping priority of SS set 6 is second only to SS set 4.
  • 3 candidate PDCCHs are configured in SS set 3, and the associated candidate PDCCHs defined by the current protocol are in one-to-one correspondence, then 3 candidate PDCCHs are also configured in SS set 5.
  • SS set 4 is configured with 1 candidate PDCCH
  • SS set 6 is also configured with only 1 candidate PDCCH.
  • the number of monitoring times corresponding to this pair of associated candidate PDCCHs is 3, that is, SS set 4 and SS set 6 are one A total of 3 monitoring sessions. Assuming that the upper limit of the remaining monitoring times is 8 times, that is, the first threshold is 8 times, the monitoring count results (the first times) of the associated SS set 3 and SS set 5 are greater than the upper limit of the remaining monitoring times (the first time threshold). At this point, the terminal device discards SS set 3 and SS set 5.
  • the terminal device can determine whether the third number of times of the candidate PDCCH to be monitored exceeds 8 times on SS set 4 and SS set 6 according to the first rule, If it exceeds 8 times, SS set 4, SS set 6 and other SS sets are discarded, or the terminal device can determine SS set 4 and SS set 6 according to the second rule (at this time, the third search space set is regarded as / It is assumed to be used for PDCCH independent transmission) to determine whether the number of candidate PDCCHs that need to be monitored exceeds 8 times. If not more than 8 times, the terminal device may determine to monitor candidate PDCCHs for repeated transmission on SS set 4 and SS set 6.
  • the terminal device discards SS set 4 and SS set 6, or SS set 4 and SS set 6 are regarded/assumed for PDDCCH independent transmission.
  • the terminal device determines that the number of candidate PDCCHs to be monitored on both SS set 4 and SS set 6 exceeds 8 times, then it is determined on SS set 7 whether the third number of candidate PDCCHs to be monitored exceeds 8 times, and if it exceeds 8 times , then discard SS set 7 and other SS sets. If not more than 8 times, the terminal device may determine to monitor the candidate PDCCH for independent transmission on SS set 7. In this case, the terminal device can still determine on SS set 8 whether the number of candidate PDCCHs to be monitored exceeds the remaining number of times.
  • the first search space set and the second search space set may not be discarded, or Not discarding the first search space set and the second search space set as a whole, or not discarding all of the first search space set, the second search space set, and the remaining search space sets, can improve the utilization rate of the candidate PDCCH resources.
  • a candidate PDCCH of an associated search space set and a candidate PDCCH of another associated search space set may appear together in a certain time slot.
  • the time-frequency resources corresponding to the two candidate PDCCHs overlap, And when it is counted as a blind detection, if the terminal device monitors a PDCCH on this time-frequency resource, it cannot distinguish which linked PDCCH this PDCCH is, which affects the correct reception of the PDCCH.
  • the received PDCCH is combined and decoded, which may cause combined decoding to fail.
  • candidate PDCCH 1 belongs to SS set 1
  • candidate PDCCH 2 belongs to SS set 2
  • candidate PDCCH 3 belongs to SS set 3
  • candidate PDCCH 4 belongs to SS set 4
  • the base station indicates SS set 1 and SS set through resource configuration information or high-level parameter configuration.
  • SS set 3 and SS set 4 are associated, that is, SS set 1 and SS set 2 are used together for PDCCH repeated transmission of the same DCI, SS set 3 and SS set 4 are used together for PDCCH repeated transmission of the same DCI , candidate PDCCH 1 and candidate PDCCH 2 may send the same first PDCCH, and candidate PDCCH 3 and candidate PDCCH 4 may also send the same second PDCCH.
  • the terminal device cannot determine whether the base station sends the first PDCCH or the second PDCCH, which affects the correct reception of the PDCCH, resulting in decoding failure.
  • an embodiment of the present application proposes a method for information detection.
  • the terminal device or the base station determines that the time-frequency resources of the candidate PDCCH 2 and the candidate PDCCH 4 overlap and the count is one blind detection
  • the terminal device is pre-defined by the protocol. It is only necessary to decode the candidate PDCCH of the SS set with the smallest SS set index value in the overlapping resources, that is, the terminal device only needs to decode the candidate PDCCH 2.
  • the terminal device decodes the PDCCH 2 according to the configuration information of the SS set 2, because Candidate PDCCH 2 belongs to SS set 2.
  • the base station sends DCI only through the candidate PDCCH of the SS set with the smallest index value of the SS set in the overlapping resources.
  • the terminal device when the time-frequency resources corresponding to the two candidate PDCCHs overlap and meet the condition of being counted as a blind detection, the terminal device is defined according to the configuration of the minimum index value of the search space set to which the two candidate PDCCHs belong.
  • the base station sends the DCI according to the configuration information with the smallest index value of the search space set to which the two candidate PDCCHs belong.
  • the terminal device may also be defined to receive DCI according to the configuration information with the largest index value of the search space set.
  • the base station sends DCI according to the configuration information with the largest index value of the search space set, and do not do this. limited.
  • the terminal device receives DCI according to the SS set configuration information associated with the CORESET with the smallest CORESET index to which the two candidate PDCCHs belong. In this case, the base station receives the DCI according to the minimum CORESET index to which the two candidate PDCCHs belong.
  • the SS set configuration information associated with the CORESET can be used to send DCI, or it can be defined to receive or send DCI according to the SS set configuration information associated with the CORESET with a larger index.
  • the method can improve the success rate of terminal equipment receiving PDCCH, and specifically includes:
  • the terminal device determines that the time-frequency resources corresponding to the first candidate physical downlink control channel PDCCH overlap with the time-frequency resources corresponding to the second candidate PDCCH.
  • the first candidate PDCCH is associated with the third candidate PDCCH, and is used for repeated transmission of the first DCI
  • the second candidate PDCCH is associated with the fourth candidate PDCCH, and is used for the repeated transmission of the second DCI.
  • the first candidate PDCCH belongs to the first SS set
  • the second candidate PDCCH belongs to the second SS set
  • the third candidate PDCCH belongs to the third SS set
  • the fourth candidate PDCCH belongs to the fourth SS set.
  • the first SS set and the third SS set are associated, and the second SS set and the fourth SS set are associated.
  • the time-frequency resources corresponding to the first candidate PDCCH and the time-frequency resources corresponding to the second candidate PDCCH overlap, and the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships:
  • the first candidate PDCCH and the second candidate PDCCH have the same scrambling sequence
  • the first candidate PDCCH is associated with the same control resource set as the second candidate PDCCH;
  • the bit size of the downlink control information DCI carried by the first candidate PDCCH and the second candidate PDCCH is the same.
  • the terminal device detects the first DCI on the first candidate PDCCH, where the index value of the first SS set to which the first candidate PDCCH belongs is smaller than the index value of the second SS set to which the second candidate PDCCH belongs. Specifically, the terminal device detects the first DCI on the first candidate PDCCH and the third candidate PDCCH.
  • the number of blind detections of the terminal device on the first candidate PDCCH and the third candidate PDCCH is 3 times.
  • the terminal device may only detect the first DCI on the first candidate PDCCH and the third candidate PDCCH, and not detect the second DCI on the second candidate PDCCH and the fourth candidate PDCCH.
  • the base station will not send the PDCCH configured by the second SS set to which the second candidate PDCCH belongs, so the terminal device will not combine and decode the second candidate PDCCH and the fourth candidate PDCCH, and these two candidate PDCCHs cannot perform the first If the two DCIs are repeatedly sent, the terminal device will not monitor the two candidate PDCCHs.
  • the terminal device may detect the first DCI on the first candidate PDCCH and the third candidate PDCCH, and detect the independently sent second DCI on the fourth candidate PDCCH.
  • the protocol can predefine that the associated candidate PDCCH in this case becomes the candidate PDCCH for independent transmission, and the base station will not send the PDCCH configured in the second SS set to which the second candidate PDCCH belongs, but still sends the fourth candidate PDCCH The PDCCH configured by the fourth SS set to which it belongs.
  • the terminal device does not detect the second DCI on the second candidate PDCCH, but detects the second DCI sent independently on the fourth candidate PDCCH, and does not perform any combining operation, which is counted as a blind detection or monitoring.
  • the terminal device when the terminal device determines that the time-frequency resource corresponding to the first candidate PDCCH used for the first DCI repeated transmission and the time-frequency resource corresponding to the second candidate PDCCH used for the second DCI repeated transmission overlap and When it is counted as one blind detection, the terminal device is based on the index value of the first SS set to which the first candidate PDCCH belongs and the index value of the second SS set to which the second candidate PDCCH belongs (the index value of the first SS set is smaller than the index value of the second SS set).
  • the index value of the second SS set that is, the mapping priority of the first SS set is higher than the mapping priority of the second SS set
  • the PDCCHs are consistent with each other, thereby improving the success rate of receiving the PDCCH by the terminal device.
  • candidate PDCCH 1 belongs to SS set 1
  • candidate PDCCH 2 belongs to SS set 2
  • candidate PDCCH 3 belongs to SS set 3
  • candidate PDCCH 4 belongs to SS set 4
  • the base station indicates SS set 1 and SS set through resource configuration information or high-level parameter configuration.
  • candidate PDCCH 1 and candidate PDCCH 2 may transmit the same first PDCCH
  • candidate PDCCH 3 and candidate PDCCH 4 may also transmit the same second PDCCH.
  • the time-frequency resources of the candidate PDCCH 1 and the candidate PDCCH 3 overlap, and the terminal equipment cannot determine whether the base station sends the first PDCCH or the second PDCCH on the time-frequency resources; the time-frequency resources of the candidate PDCCH 2 and the candidate PDCCH 4 overlap. On the time-frequency resources, the terminal equipment cannot determine whether the base station sends the first PDCCH or the second PDCCH; the terminal equipment cannot receive the PDCCH correctly, resulting in decoding failure.
  • an embodiment of the present application proposes a method for information detection.
  • a terminal device or a base station determines that the time-frequency resources of candidate PDCCH 1 and candidate PDCCH 3 overlap and satisfy the condition of being counted as a blind detection, candidate PDCCH 2 and candidate PDCCH 3 overlap with each other.
  • the terminal equipment only needs to decode the candidate PDCCH of the SS set with the smallest SS set index value in the overlapping resources and the candidate PDCCH associated with it. That is, the terminal device only needs to decode the candidate PDCCH 1 and the candidate PDCCH 2.
  • the base station sends DCI only through the SS set with the smallest index value of the SS set in the overlapping resources and the candidate PDCCH of the SS set associated with it.
  • the method can improve the success rate of terminal equipment receiving PDCCH, and specifically includes:
  • the terminal device determines that the time-frequency resource corresponding to the first candidate physical downlink control channel PDCCH overlaps the time-frequency resource corresponding to the second candidate PDCCH, and the time-frequency resource corresponding to the third candidate PDCCH and the time-frequency resource corresponding to the fourth candidate PDCCH overlap. Overlapping, the first candidate PDCCH and the third candidate PDCCH are used for repeated transmission of the first downlink control information DCI, and the second candidate PDCCH and the fourth candidate PDCCH are used for the repeated transmission of the second downlink control information DCI.
  • the first candidate PDCCH belongs to the first SS set
  • the second candidate PDCCH belongs to the second SS set
  • the third candidate PDCCH belongs to the third SS set
  • the fourth candidate PDCCH belongs to the fourth SS set.
  • the first SS set and the third SS set are associated
  • the second SS set and the fourth SS set are associated.
  • the time-frequency resources corresponding to the first candidate PDCCH and the time-frequency resources corresponding to the second candidate PDCCH overlap, and the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships:
  • the first candidate PDCCH and the second candidate PDCCH have the same scrambling sequence
  • the first candidate PDCCH is associated with the same control resource set as the second candidate PDCCH;
  • the bit size of the downlink control information DCI carried by the first candidate PDCCH and the second candidate PDCCH is the same.
  • the terminal device detects the first DCI on the first candidate PDCCH and the third candidate PDCCH, where the index value of the first search space set to which the first candidate PDCCH belongs is smaller than the index of the second search space set to which the second candidate PDCCH belongs.
  • the mapping priority of the first search space set is higher than the mapping priority of the second search space set and the fourth search space set; or, the third candidate The index value of the third search space set to which the PDCCH belongs is smaller than the index value of the second search space set to which the second candidate PDCCH belongs and the index value of the fourth search space set to which the fourth candidate PDCCH belongs; or, the index of the first search space set Both the index value and the index value of the third search space set are smaller than the index value of the second search space set and the index value of the fourth search space set.
  • the network device configuration information is as follows: 4 candidate PDCCHs are used for PDCCH repeated transmission, candidate PDCCH 1 belongs to SS set 1, candidate PDCCH 2 belongs to SS set 2, candidate PDCCH 3 belongs to SS set 3, candidate PDCCH 4 belongs to SS set 4,
  • the base station indicates through resource configuration information or high-level parameter configuration that SS set 1 and SS set 2 are associated, and SS set 3 and SS set 4 are associated, that is, SS set 1 and SS set 2 are used together for PDCCH repeated transmission, SS set 3 Together with the SS set 4, it is used for the repeated transmission of PDCCH, the candidate PDCCH 1 and the candidate PDCCH 2 are used for the repeated transmission of the first DCI, and the candidate PDCCH 3 and the candidate PDCCH 4 are used for the repeated transmission of the second DCI.
  • the terminal equipment determines that the time-frequency resources of the candidate PDCCH 1 and the candidate PDCCH 3 overlap and meet the conditions of being counted as a blind detection, and the time-frequency resources of the candidate PDCCH 2 and the candidate PDCCH 4 overlap and meet the conditions of being counted as a blind detection, because the SS
  • the index value of set 1 is smaller than the index value of SS set 3 and SS set 4, and the index value of SS set 2 is also smaller than the index value of SS set 3 and SS set 4. Therefore, the terminal device is on candidate PDCCH 1 and candidate PDCCH 2.
  • the first DCI is detected without detecting the second DCI.
  • the base station or network device configuration information is as follows: 4 candidate PDCCHs are used for PDCCH repeated transmission, candidate PDCCH 1 belongs to SS set 1, candidate PDCCH 2 belongs to SS set 2, candidate PDCCH 3 belongs to SS set 3, and candidate PDCCH 4 belongs to SS set 4.
  • SS set 1 is associated with CORESET2
  • SS set 2 is associated with CORESET1
  • SS set 3 is associated with CORESET3
  • SS set 4 is associated with CORESET4.
  • the network device indicates through resource configuration information or high-level parameter configuration that SS set 1 and SS set 2 are associated, and SS set 3 and SS set 4 are associated, that is, SS set 1 and SS set 2 are used together for PDCCH repeated transmission, SS set 3 and SS set 4 are used together for PDCCH repeated transmission, candidate PDCCH 1 and candidate PDCCH 2 are used for repeated transmission of the first DCI, and candidate PDCCH 3 and candidate PDCCH 4 are used for repeated transmission of the second DCI.
  • the terminal device determines that the time-frequency resources of the candidate PDCCH 1 and the candidate PDCCH 3 overlap and meet the conditions of being counted as a blind check, and the time-frequency resources of the candidate PDCCH 2 and the candidate PDCCH 4 overlap and meet the conditions of being counted as a blind check, because CORESET1
  • the index value of CORESET3 and CORESET4 is smaller than the index value of CORESET3 and CORESET4, and/or the index value of CORESET2 is also smaller than the index value of CORESET3 and CORESET4. Therefore, the terminal device detects the first DCI on candidate PDCCH 1 and candidate PDCCH 2 without detecting the second DCI. DCI.
  • the terminal device when the terminal device determines that the time-frequency resources corresponding to the first candidate PDCCH used for the first DCI repeated transmission and the time-frequency resources corresponding to the second candidate PDCCH used for the second DCI repeated transmission overlap, And when the time-frequency resources corresponding to the third candidate PDCCH used for the first DCI repeated transmission and the time-frequency resources corresponding to the fourth candidate PDCCH used for the second DCI repeated transmission overlap, the terminal device will use the second candidate PDCCH to The index value of the SS set, the index value of the second SS set to which the fourth candidate PDCCH belongs, the index value of the first SS set to which the first candidate PDCCH belongs, and the size of the index value of the first SS set to which the first candidate PDCCH belongs ( The index value of the first SS set and/or the index value of the third SS set is smaller than the index value of the second SS set and the index value of the fourth SS set), it is determined to detect the first candidate PDCCH and the third candidate PDCCH
  • the protocol supports independent candidate PDCCH (individual PDCCH candidate) and associated candidate A scenario in which PDCCH (linked PDCCH candidate) exists at the same time and satisfies a blind check (count one).
  • PDCCH linked PDCCH candidate
  • candidate PDCCH 1 belongs to SS set 1
  • candidate PDCCH 2 belongs to SS set 2
  • candidate PDCCH 3 belongs to SS set 3.
  • the base station indicates through resource configuration information or high-level parameter configuration that SS set 1 and SS set 2 are related, and SS set 3 It is used for PDCCH independent transmission, that is, SS set 1 and SS set 2 are used together for PDCCH repeated transmission.
  • candidate PDCCH 1 and candidate PDCCH 2 may transmit the same first PDCCH
  • candidate PDCCH 3 may transmit the second PDCCH.
  • the terminal device determines that the time-frequency resources of candidate PDCCH 2 and candidate PDCCH 3 overlap and satisfy one blind detection.
  • the priority of the SS set is determined according to the index value of the SS set.
  • the terminal device determines that the number of times to determine the candidate PDCCH that needs to be monitored on the candidate PDCCH 1 and the candidate PDCCH 2 is 3 times, and it is determined not to monitor the PDCCH on the candidate PDCCH 3. It is understandable
  • the configuration information of SS set 3 is not used to monitor candidate PDCCHs on overlapping resources.
  • candidate PDCCH 1 belongs to SS set 1
  • candidate PDCCH 2 belongs to SS set 3
  • candidate PDCCH 3 belongs to SS set 2.
  • the base station indicates through resource configuration information or high-level parameter configuration that SS set 1 and SS set 3 are related, and SS set 2 It is used for PDCCH independent transmission, that is, SS set 1 and SS set 3 are used together for PDCCH repeated transmission.
  • candidate PDCCH 1 and candidate PDCCH 2 may transmit the same first PDCCH
  • candidate PDCCH 3 may transmit the second PDCCH.
  • the terminal device determines that the time-frequency resources of candidate PDCCH 2 and candidate PDCCH 3 overlap and satisfy one blind detection.
  • the priority of the SS set is determined according to the index value of the SS set.
  • the terminal device determines that the number of times to determine the second PDCCH to be monitored on the candidate PDCCH 3 is 1, and the number of times to determine the first PDCCH to be monitored on the candidate PDCCH 1 is 1 time, a total of 2 times of monitoring, and it is determined not to monitor the first PDCCH on the candidate PDCCH 2, it can be understood that the configuration information of the SS set 2 is not used to monitor the candidate PDCCH on the overlapping resources.
  • the time-frequency resources corresponding to an individual PDCCH candidate and a linked PDCCH candidate overlap and are counted as one blind detection, the number of listening times of the candidate PDCCH is not fixed, which may lead to different blind detection counting results between the terminal device and the base station. Thus, the correct transmission of the PDCCH is affected.
  • the present application proposes a method for information detection, which can improve the reliability of PDCCH transmission.
  • FIG. 13 a schematic flowchart of a method 1300 for information detection is shown. Specifically, the method includes:
  • the terminal device determines that the time-frequency resources corresponding to the first candidate physical downlink control channel PDCCH overlap with the time-frequency resources corresponding to the second candidate PDCCH.
  • the first candidate PDCCH belongs to the first search space set
  • the second candidate PDCCH belongs to the second search space set
  • the third candidate PDCCH belongs to the third search space set
  • the first search space set and the third search space set are used for PDCCH repetition Transmission, that is, the first set of search spaces is associated with the third set of search spaces
  • the second set of search spaces is used for PDCCH independent transmission.
  • the time-frequency resources corresponding to the first candidate PDCCH and the time-frequency resources corresponding to the second candidate PDCCH overlap, and the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships:
  • the first candidate PDCCH and the second candidate PDCCH have the same scrambling sequence
  • the first candidate PDCCH is associated with the same control resource set as the second candidate PDCCH;
  • the bit size of the downlink control information DCI carried by the first candidate PDCCH and the second candidate PDCCH is the same.
  • the terminal device determines the number of candidate PDCCHs that need to be monitored on the first candidate PDCCH and the third candidate PDCCH according to the first rule, that is, the terminal device does not need to monitor the second candidate PDCCH; wherein the first rule is used for repeated transmission.
  • PDCCH monitoring counting rules PDCCH monitoring counting rules. It should be understood that, in this case, the transmission priority of the candidate PDCCH for repeated transmission is pre-defined by the protocol to be higher than the transmission priority of the candidate PDCCH for independent transmission.
  • the index value of the first search space set may be smaller than the index value of the second search space set, and the index value of the first search space set may also be greater than the index value of the second search space set.
  • the index value of the third search space set may be smaller than the index value of the second search space set, and the index value of the third search space set may also be greater than the index value of the second search space set.
  • the base station or network device configuration information is as follows: three SS sets for PDCCH transmission, assuming that each SS set is configured with only one candidate PDCCH. Among them, candidate PDCCH 1 belongs to SS set 1, candidate PDCCH 2 belongs to SS set 2, and candidate PDCCH 3 belongs to SS set 3.
  • the base station indicates through resource configuration information or high-level parameter configuration that SS set 1 and SS set 3 are related, and SS set 2 It is used for PDCCH independent transmission, that is, SS set 1 and SS set 3 are used together for PDCCH repeated transmission.
  • candidate PDCCH 1 and candidate PDCCH 3 may transmit the same first PDCCH
  • candidate PDCCH 2 may transmit the second PDCCH.
  • the terminal device When the terminal device determines that the time-frequency resources of the candidate PDCCH 3 and the candidate PDCCH 2 overlap and meet the condition of being counted as a blind detection, the terminal device can detect the first PDCCH on the candidate PDCCH 1 and the candidate PDCCH 3 without detecting the second PDCCH .
  • the protocol predefines the priority of repeated transmissions higher than that of independent transmissions.
  • the protocol adopts the monitoring count method of option 5 to determine the monitoring times of two associated candidate PDCCHs (linked PDCCH candidates), that is, the monitoring times of the two associated candidate PDCCHs is 3, and among the two associated candidate PDCCHs
  • the one candidate PDCCH with an earlier time domain position is counted as one blind detection or one candidate PDCCH for monitoring, and the one candidate PDCCH with a later time domain position among the two associated candidate PDCCHs is counted as 2 blind detections or counts as 2 candidate PDCCHs for monitoring.
  • the PDCCH mapping priority corresponding to candidate PDCCH 2 is higher, and blind detection and counting are performed first according to the blind detection and counting rules. It is assumed that the terminal device determines that the number of blind detections corresponding to the candidate PDCCH 2 is 1 according to the blind detection counting rule.
  • the PDCCH mapping priority of candidate PDCCH 3 is second only to that of candidate PDCCH 2. Since the priority of repeated transmissions predefined by the protocol is higher than that of independent transmission, the base station or network device will locate the overlapping resources where candidate PDCCH 2 and candidate PDCCH 3 are located.
  • Repeated PDCCH transmission is performed on the PDCCH, that is, the first PDCCH is sent. Therefore, the number of blind detections corresponding to the overlapping resources should be counted as 2 blind detections according to the second rule. The number of blind detections is increased by one blind detection to the results after the number of detections, to 2 times.
  • the terminal device determines that the time-frequency resources corresponding to the third candidate physical downlink control channel PDCCH overlap with the time-frequency resources corresponding to the second candidate PDCCH.
  • the first candidate PDCCH belongs to the first search space set
  • the second candidate PDCCH belongs to the second search space set
  • the third candidate PDCCH belongs to the third search space set
  • the first search space set and the third search space set are used for PDCCH repetition Transmission, that is, the first set of search spaces is associated with the third set of search spaces
  • the second set of search spaces is used for PDCCH independent transmission.
  • the terminal device determines the number of candidate PDCCHs that need to be monitored on the second candidate PDCCH according to the second rule, that is, the terminal device does not need to monitor the first candidate PDCCH and the third candidate PDCCH for repeated transmission; wherein, the protocol pre-defines the second rule It is the monitoring count rule for PDCCH for independent transmission.
  • the base station or network device configuration information is as follows: three SS sets for PDCCH transmission, assuming that each SS set is configured with only one candidate PDCCH. Among them, candidate PDCCH 1 belongs to SS set 1, candidate PDCCH 2 belongs to SS set 2, and candidate PDCCH 3 belongs to SS set 3.
  • the base station indicates through resource configuration information or high-level parameter configuration that SS set 1 and SS set 3 are related, and SS set 2 It is used for PDCCH independent transmission, that is, SS set 1 and SS set 3 are used together for PDCCH repeated transmission.
  • candidate PDCCH 1 and candidate PDCCH 3 may transmit the same first PDCCH
  • candidate PDCCH 2 may transmit the second PDCCH.
  • the terminal device can detect the second PDCCH on the candidate PDCCH 2 according to the rules predefined in the protocol, without the need to detect the second PDCCH. a PDCCH.
  • the pre-defined rule of the protocol is that the priority of independent transmission is higher than that of repeated transmission.
  • the base station or the network device sends the second PDCCH on the overlapping resource, and the terminal side determines the number of blind detections on the overlapping resource or the number or the number of times for monitoring the candidate PDCCH according to the second rule.
  • the overlapping resource count is 1 blind detection
  • the candidate PDCCH 2 and the candidate PDCCH 3 are a total of 1 blind detection (or the count is 1 candidate PDCCH for monitoring). This application does not limit this.
  • the terminal device determines that the time-frequency resources corresponding to the first candidate PDCCH used for repeated transmission overlap with the time-frequency resources corresponding to the second candidate PDCCH used for independent transmission, the terminal device determines that the The number of candidate PDCCHs to be monitored on the repeatedly transmitted first candidate PDCCH and the third candidate PDCCH can avoid inconsistency between the terminal device's monitoring of the candidate PDCCH and the base station's count result, thereby improving the reliability of PDCCH transmission.
  • priority rules given above are only examples.
  • the priority of a small index is higher than that of a large index
  • the priority of repeated transmission is higher than that of independent transmission.
  • the priority rules in this application may be preset. , or pre-agreed in the agreement.
  • FIG. 14 a schematic block diagram of a communication apparatus 1400 according to an embodiment of the present application is shown.
  • the apparatus may be applied to the terminal device in the embodiments of the present application.
  • the communication device 1400 includes: a processing unit 1410 for:
  • the first rule it is determined that the first number of times the candidate physical downlink control channel PDCCH needs to be monitored on the first search space set and the second search space set is greater than the first threshold, wherein the first search space set and the The second set of search spaces is associative;
  • the second rule determine whether the second number of times of the candidate PDCCHs that need to be monitored on the first search space set is greater than the first threshold
  • the processing unit 1410 is specifically configured to: if the second number of times is less than the first threshold, determine the number of candidate PDCCHs that need to be monitored on the second search space set according to the second rule. Whether the fourth number of times is greater than a second threshold, wherein the second threshold is equal to the first threshold minus the second number of times.
  • the processing unit 1410 is further configured to: if the fourth number of times is less than the second threshold, determine whether the fifth number of times of the candidate PDCCH that needs to be monitored on the at least one third search space set is greater than A third threshold, wherein the third threshold is equal to the second threshold minus the fourth number of times.
  • the processing unit 1410 is specifically configured to: determine, according to the first rule or the second rule, whether the third number of times of the candidate PDCCHs that need to be monitored on the at least one third search space set is greater than the specified number of times. the first threshold.
  • the processing unit 1410 is further configured to: if the third number of times is less than the first threshold, determine, according to the second rule, the sixth number of candidate PDCCHs that need to be monitored on the fourth search space set. Whether the number of times is greater than a fourth threshold, where the fourth threshold is equal to the first threshold minus the third number of times.
  • the index value of the third search space set is greater than the index value of the first search space set and/or the index value of the second search space set.
  • the first rule is a monitoring counting rule of PDCCH used for repeated transmission; the second rule is a monitoring counting rule of PDCCH used for independent transmission.
  • FIG. 15 a schematic block diagram of a communication apparatus 1500 according to an embodiment of the present application is shown.
  • the apparatus may be applied to the terminal device in the embodiments of the present application.
  • the communication device 1500 includes: a processing unit 1510 for:
  • the first candidate PDCCH is used for repeated transmission of the first downlink control information DCI
  • the second candidate PDCCH The PDCCH is used for repeated transmission of the second DCI; the first DCI is detected on the first candidate PDCCH, wherein the index value of the first search space set to which the first candidate PDCCH belongs is smaller than the second candidate PDCCH The index value of the second search space set to which it belongs.
  • the processing unit 1510 is specifically configured to: detect the first DCI on the first candidate PDCCH and the third candidate PDCCH, where the third search space set to which the third candidate PDCCH belongs is the same as the third candidate PDCCH. associated with the first set of search spaces.
  • the processing unit 1510 is further configured to: detect the second DCI on a fourth candidate PDCCH, where the fourth search space set to which the fourth candidate PDCCH belongs and the second search space set are Associated.
  • the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships:
  • the first candidate PDCCH and the second candidate PDCCH have the same scrambling sequence
  • the first candidate PDCCH is associated with the same control resource set as the second candidate PDCCH;
  • the bit size of the downlink control information carried by the first candidate PDCCH and the second candidate PDCCH is the same.
  • FIG. 16 a schematic block diagram of a communication apparatus 1600 according to an embodiment of the present application is shown.
  • the apparatus may be applied to the terminal device in the embodiments of the present application.
  • the communication device 1600 includes: a processing unit 1610 for:
  • a candidate PDCCH and the third candidate PDCCH are used for repeated transmission of the first downlink control information DCI, and the second candidate PDCCH and the fourth candidate PDCCH are used for the repeated transmission of the second downlink control information DCI;
  • the first DCI is detected on the first candidate PDCCH and the third candidate PDCCH, wherein the index value of the first search space set to which the first candidate PDCCH belongs and/or the third candidate PDCCH belongs to
  • the index value of the third search space set is smaller than the index value of the second search space set to which the second candidate PDCCH belongs and the index value of the fourth search space set to which the fourth candidate PDCCH belongs.
  • the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships:
  • the first candidate PDCCH and the second candidate PDCCH have the same scrambling sequence
  • the first candidate PDCCH is associated with the same control resource set as the second candidate PDCCH;
  • the bit size of the downlink control information carried by the first candidate PDCCH and the second candidate PDCCH is the same.
  • FIG. 17 a schematic block diagram of a communication apparatus 1700 according to an embodiment of the present application is shown.
  • the apparatus may be applied to the terminal device in the embodiments of the present application.
  • the communication device 1700 includes: a processing unit 1710 for:
  • the first rule determine the number of candidate PDCCHs that need to be monitored on the first candidate PDCCH and the third candidate PDCCH, the first search space set to which the first candidate PDCCH belongs and the third candidate PDCCH to which the third candidate PDCCH belongs.
  • the three search space sets are associated, the second search space set is used for independent PDCCH transmission, and the first rule is a monitoring counting rule for PDCCHs that are repeatedly transmitted.
  • the index value of the first search space set is greater than the index value of the second search space set.
  • the index value of the third search space set is greater than the index value of the second search space set.
  • the first candidate PDCCH and the second candidate PDCCH have at least one of the following relationships:
  • the first candidate PDCCH and the second candidate PDCCH have the same scrambling sequence
  • the first candidate PDCCH is associated with the same control resource set as the second candidate PDCCH;
  • the bit size of the downlink control information carried by the first candidate PDCCH and the second candidate PDCCH is the same.
  • An embodiment of the present application provides a communication apparatus 1800. As shown in FIG. 18, a schematic block diagram of a communication apparatus 1800 according to an embodiment of the present application is shown.
  • the communication device 1800 includes: at least one processor 1810, the processor is connected to a memory 1820, the memory 1820 is used for storing a computer program, and the processor 1810 is used for executing the computer program stored in the memory 1820, so as to The apparatus is caused to execute the method in any possible implementation manner in the embodiments of the present application.
  • the above-mentioned processor 1810 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software.
  • the above-mentioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA), or other possible solutions. Programming logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • Programming logic devices, discrete gate or transistor logic devices, discrete hardware components The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the embodiments of the present application further provide a computer-readable storage medium, on which a computer program for implementing the methods in the foregoing method embodiments is stored.
  • a computer program for implementing the methods in the foregoing method embodiments is stored.
  • the computer program runs on a computer, the computer can implement the methods in the above method embodiments.
  • Embodiments of the present application further provide a computer program product, where the computer program product includes computer program code, and when the computer program code runs on a computer, causes the methods in the above method embodiments to be executed.
  • An embodiment of the present application further provides a chip, including a processor, where the processor is connected to a memory, where the memory is used for storing a computer program, and the processor is used for executing the computer program stored in the memory, so that all The chip executes the methods in the above method embodiments.
  • the term "and/or” in this application is only an association relationship to describe associated objects, which means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, and A and B exist at the same time. , there are three cases of B alone.
  • the character "/" in this document generally indicates that the contextual object is an "or” relationship; the term “" in this application can indicate "one” and "two or more", for example, A, B In and C, it can be expressed that A exists alone, B exists alone, C exists alone, A and B exist simultaneously, A and C exist simultaneously, C and B exist simultaneously, and A and B and C exist simultaneously, these seven situations.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), magnetic disk or optical disk and other media that can store program codes .

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  • Engineering & Computer Science (AREA)
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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente demande concerne un procédé et un appareil de détection d'informations, capables d'améliorer le taux d'utilisation de ressources de canaux de commande de liaison descendante physiques (PDCCH) candidats. Le procédé consiste à : à déterminer, selon une première règle, qu'un premier nombre de fois où des PDCCH candidats doivent être surveillés sur un premier ensemble d'espaces de recherche et un deuxième ensemble d'espaces de recherche est supérieur à un premier seuil, le premier ensemble d'espaces de recherche étant associé au deuxième ensemble d'espaces de recherche ; déterminer, selon une seconde règle, si un deuxième nombre de fois où des PDCCH candidats doivent être surveillés sur le premier ensemble d'espaces de recherche est supérieur au premier seuil ; ou, déterminer si un troisième nombre de fois où les PDCCH candidats doivent être surveillés sur au moins un troisième ensemble d'espaces de recherche est supérieur au premier seuil.
PCT/CN2022/085230 2021-04-06 2022-04-06 Procédé et appareil de détection d'informations WO2022213960A1 (fr)

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